mere vs metre

mere

verb
  • To decide upon the position of a boundary; to position it on a map. 

adj
  • Just, only; no more than, pure and simple, neither more nor better than might be expected. 

noun
  • A Maori war-club. 

  • Boundary, limit; a boundary-marker; boundary-line. 

  • A body of standing water, such as a lake or a pond. More specifically, it can refer to a lake that is broad in relation to its depth. Also included in place names such as Windermere. 

metre

verb
  • To put into metrical form. 

noun
  • The basic unit of length in the International System of Units (SI: Système International d'Unités), equal to the distance travelled by light in a vacuum in 1/299 792 458 seconds. The metre is equal to 39+⁴⁷⁄₁₂₇ (approximately 39.37) imperial inches. 

  • The rhythm or measure in verse and musical composition. 

How often have the words mere and metre occurred in a corpus of books? (source: Google Ngram Viewer )